Intel Xeon W 2123 's Advantages
Released 2 years and 2 months late
Higher specification of memory (2666 vs 1866)
Higher base frequency (3.6GHz vs 2.8GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (120W vs 165W)
Intel Xeon E7 8891 v3 's Advantages
Larger L3 cache size (45MB vs 8.25MB)